Tree · Rosaceae
Apple
Malus domestica
Offer it full sun, a pollination partner, and a yearly prune, and an apple tree feeds you for decades.
Full sun
Every 7–14 days
USDA 3–8
8–30 ft · 2.4–9 m
Overview
An apple tree is something you plant for the years ahead, and it asks far less of you than it gives back. It's a member of the rose family, shaped over thousands of years of breeding and grafting into the named varieties you see at the store. Set one into good ground and it can keep bearing for 30 years or more, becoming a steady part of the yard rather than a project you fret over each season.
The thing that quietly trips up many new growers is pollination. Most apple cultivars can't fertilize their own flowers, so a tree on its own blooms gorgeously and then gives you almost nothing, which is nobody's fault. For a genuine crop, you'll want a second, compatible variety flowering at the same time within reach of the bees, or a crabapple lending a hand close by. Plan on two trees from the beginning, or simply check whether a neighbor already grows one.
One last factor settles whether an apple is even a good fit for your area: chill hours. The tree needs a good run of winter cold to break dormancy and flower come spring, and each cultivar wants its own amount. Pair the right variety to your zone, give it sun and a yearly prune, and from there it's just the gentle, unhurried business of watching a tree grow up.
Care
The short version: give it full sun all day, deep well-drained soil near a pH of 6.0 to 7.0, and a second compatible variety close by for pollination. Water young trees regularly, prune each winter, and hold the nitrogen back a little so the new growth stays sturdy.
Light
An apple tree truly wants full sun, which comes to 6 or more hours of direct light each day, and it doesn't really take to shade. Sun is what powers the flower buds and ripens the fruit, so a shaded tree tends to grow weakly, catch more disease, and offer only a thin crop.
Water
Young and newly planted trees count on steady water as their roots reach out, so soak them deeply every 7 to 14 days when things turn dry. An established tree is fairly drought tolerant, yet even moisture still helps it size up and set a better crop. Let the top half of the root zone dry out between waterings.
Soil
Give it deep, well-drained loam generous with organic matter, and stay clear of waterlogged or compacted spots that can rot the roots. A pH of 6.0 to 7.0 sits well with apples, hovering close to neutral.
Temperature
Apples are remarkably hardy, taking a span of roughly -40°F to 95°F (-40°C to 35°C) through the year, and they thrive in hardiness zones 3 to 8. They do need a good stretch of winter chill before they'll flower, so simply pair the cultivar to your zone.
Humidity
Plain outdoor air in the 40% to 70% range suits them fine, so this is one number you can stop worrying about. Airflow counts for far more, since damp, crowded branches are exactly how scab and other fungal diseases take hold.
Feeding
Feed just once in early spring before new growth gets going, with a balanced or nitrogen-based fertilizer. Be gentle with the nitrogen, though, because a rush of soft growth is precisely what fire blight thrives on.
Pruning
Prune each year in late winter while the tree is dormant, shaping it toward a strong central leader or an open center. Take out dead, diseased, or crossing wood and open the canopy so light and air can reach the fruit. A light summer trim helps settle down a tree that's growing too eagerly.
Repotting
Apples belong in the ground rather than a pot, so most trees never call for repotting at all. The one exception is a dwarf tree in a large container, which appreciates a refresh or a move to a bigger pot every 2 to 3 years to keep its roots content.
Size & spacing
Mature size varies a lot with the rootstock, ranging from a dwarf near 8 feet (240 cm) up to a standard around 30 feet (9 m) tall and nearly as wide. Spread comes in at roughly 8 to 25 feet (2.4 to 7.5 m), so leave each tree the room it needs to fill out without feeling crowded.
When to plant
An apple tree keeps an unhurried calendar, and there's no rushing it. Plant bare-root trees in early spring once the ground thaws and the tree is still dormant, then watch for blossom in mid to late spring. The fruit follows, ripening from late summer into fall, somewhere around August to October depending on the cultivar.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Early spring while dormant, after the ground thaws, for bare-root trees; container trees can go in from spring to early summer.
- Harvest: Blooms mid to late spring; fruit ripens late summer to fall (about August to October) depending on cultivar.
Hardiness
USDA hardiness zones: 3–8
Temperature: down to -40°C
Troubleshooting
Most apple troubles turn up on the leaves, the blossoms, or inside the fruit, and the cool, wet days of spring set much of it in motion. The reassuring part is that learning to spot the early signs lets you step in before anything settles for the season. Find what matches your tree below, then act while your effort still counts, and know that most of these are recoverable.
Blossoms and shoot tips turn black and bend like a shepherd's crook
What you're seeing is fire blight, a bacterium that moves quickly in warm, wet bloom weather and leaves shoots looking singed. You can still get the upper hand: cut away the infected wood 8 to 12 inches below the damage you can see, and wipe your tools with disinfectant after each cut so the bacteria don't hitch a ride from branch to branch. Keep a light hand with nitrogen, too, since the soft, hurried growth it produces is just what this disease loves.
Fix:
- Prune out infected wood at least 8 to 12 inches below visible symptoms.
- Disinfect pruning tools between every cut to avoid spreading the bacteria.
Soft dark patches on leaves and fruit, with leaves falling too soon
Take a breath, because this is apple scab, a common fungus that stirs into action during cool, wet spring weather after surviving the winter in last year's fallen leaves. You can stay ahead of it: rake up and bag every leaf beneath the tree come autumn, prune so air moves freely, and begin a protectant fungicide at bud break if spring turns soggy. If you'd rather skip most of the worry altogether, a scab-resistant cultivar does the heavy lifting for you.
Fix:
- Rake and remove fallen leaves to reduce overwintering spores.
- Apply a labeled fungicide on a protectant schedule starting at bud break in wet springs.
Cheerful orange spots on leaves with curious tubes below
Those vivid spots point to cedar-apple rust, a fungus with an unusual habit: it needs two homes and travels back and forth between your apple and any juniper or red cedar nearby. Where you can, gently remove the juniper hosts, and treat from pink bud through early fruit set in any spots that give you trouble. The easiest path to peace of mind over the years is to choose a rust-resistant cultivar and let junipers grow at a good distance.
Fix:
- Remove nearby juniper or red cedar hosts where practical.
- Apply a labeled fungicide from pink bud through early fruit set in problem areas.
Wormy apples with tunnels and crumbly brown frass within
This familiar nuisance is the codling moth, whose larvae tunnel right to the core and give you that classic wormy apple. The good news is it's very manageable: hang pheromone traps to catch the adults and time your sprays to when the eggs hatch, thin the fruit, and pick up every dropped or affected apple so the next round of moths finds nowhere to settle. On a small backyard tree, slipping a bag over each fruit works wonderfully too.
Fix:
- Thin fruit and remove and destroy dropped or infested apples.
- Use pheromone traps to time labeled insecticide or kaolin sprays, or bag individual fruit.
Toxicity
Ripe apple flesh is a healthy snack for people and a welcome treat for plenty of animals, so there's no need to worry over a slice. The caution lives in the seeds, leaves, twigs, and bark, which carry cyanogenic compounds that release cyanide once they're chewed. Just keep prunings and wilted leaves away from pets and livestock, and don't let animals make a meal of whole apples or cores.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds
Safe for
People
Cats Caution
Most cats won't touch the fruit anyway, yet the seeds, leaves, and bark give off cyanide as they break down. Tuck cores and prunings somewhere a curious cat simply can't reach them.
Dogs Caution
A taste of ripe flesh is perfectly fine, but the seeds, core, leaves, and bark are off-limits because they release cyanide. Just don't let a dog chew on a whole apple or the windfalls.
Horses Caution
Horses adore a piece of apple flesh, and a few cause no harm at all. The real concern is wilted leaves and big amounts of seeds, so keep prunings and dropped fruit out of the paddock.
Rabbits Caution
A small piece of ripe flesh is a lovely treat, just never the seeds, and keep the leaves and twigs well out of reach.
Livestock Moderate
For cattle, goats, and sheep, the wilted apple leaves are the genuine hazard, giving off cyanide as they dry. Be sure to keep prunings and branches clear of the pasture.
Birds Caution
The flesh poses no problem, yet apple seeds hold cyanide and birds feel it very keenly. Take out every seed before you share a bite.
People Ripe fruit safe
Ripe apple is a healthy, everyday snack. The seeds do contain a cyanide compound, but you'd need to chew a whole handful for any of it to count, so simply set the cores aside.
The danger is the wilting leaves, stems, and chewed seeds (cyanide), not the flesh. Keep pets and livestock away from prunings and wilted leaves and do not let them chew large numbers of seeds; sliced ripe flesh with the core and seeds removed is a safe treat in moderation.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
There are thousands of apple cultivars out there, but only a handful show up in most backyards and at the garden center. These are the ones worth getting to know by name, and do remember you'll want two compatible varieties for pollination.
Honeycrisp
A cold-hardy favorite prized for its big, juicy snap, even if growing and storing it well asks for a little patience.
Gala
A gentle, sweet apple in red-and-yellow stripes that ripens early and helpfully serves as a dependable pollinizer for other trees.
Granny Smith
A crisp, tart green apple that asks for a long warm season, bakes beautifully, and keeps for months on end.
Fuji
A wonderfully sweet, firm apple that keeps for a very long time, though it asks for a long growing season to ripen fully.
Red Delicious
The familiar deep-red, heart-shaped dessert apple, soft in flavor beneath a noticeably thick skin.
How to propagate
Apples don't come true from seed, so nearly every tree worth eating from is grafted, and that's perfectly normal. Here's how the methods stack up against each other and how long each one takes to bring fruit to your table.
GraftingModerate
Late winter to early spring while both scion and rootstock are dormant. · Bears fruit in roughly 2 to 4 years on dwarfing rootstock, longer on standard.
This is the trusted way to keep a named cultivar true to type, by uniting scion wood with a rootstock while both rest dormant in late winter or early spring. It's that rootstock that decides the tree's eventual size, how soon it fruits, and how comfortably it copes with your soil. Look for apples in roughly 2 to 4 years on dwarfing rootstock, with a bit more waiting on standard.
GraftingModerate
Late summer, when bark slips and buds are mature. · Bud grows out the following spring; fruiting follows in a few years.
Think of this as the tidy nursery take on grafting, tucking one mature bud onto a rootstock in late summer while the bark peels away easily. The bud rests quietly through winter, awakens the following spring, and the little tree begins fruiting a few years on. Using a single bud per rootstock makes precious scion wood go so much further than a full graft would.
SeedModerate
Cold-moist stratify seeds about 6 to 8 weeks, then sow in spring. · Several years to fruit, and not true to type.
Starting from seed calls for a cold, damp rest of about 6 to 8 weeks before you sow in spring. Those seedlings take several years to fruit and won't echo the parent apple, so this path really suits raising rootstocks or breeding fresh varieties, not recreating a favorite you already cherish.
Myths
Plant a seed from a tasty apple and the tree will grow that same apple.
Here's a happy surprise for first-timers: apples don't come true from seed. Each seedling holds a brand-new shuffle of genes and usually gives small, sour fruit unlike the parent at all. Named cultivars are reproduced by grafting scion wood onto a rootstock, and that's the one way to hold a variety true.
A single apple tree will reliably set a full crop on its own.
Most apple cultivars are self-unfruitful, meaning they can't pollinate their own blossoms. You usually need a second, compatible variety nearby that flowers at the same time, or a crabapple growing close, before your tree fills out with a real crop.